Chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.- Chemical compound
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Chemical element with the symbol O and atomic number 8.
It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.
Usually metallic and is called the coordination centre, and a surrounding array of bound molecules or ions, that are in turn known as ligands or complexing agents.
Many metal-containing compounds, especially those that include transition metals (elements like titanium that belong to the Periodic Table's d-block), are coordination complexes.
In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding.
Smallest unit of ordinary matter that forms a chemical element.
Atoms can attach to one or more other atoms by chemical bonds to form chemical compounds such as molecules or crystals.
Form of matter having constant chemical composition and characteristic properties.
Chemical substances can be simple substances, chemical compounds, or alloys.
In chemistry, a salt is a chemical compound consisting of an ionic assembly of positively charged cations and negatively charged anions, which results in a compound with no net electric charge.
A chemical structure determination includes a chemist's specifying the molecular geometry and, when feasible and necessary, the electronic structure of the target molecule or other solid.
In determining structures of chemical compounds, one generally aims to obtain, first and minimally, the pattern and degree of bonding between all atoms in the molecule; when possible, one seeks the three dimensional spatial coordinates of the atoms in the molecule (or other solid).
Compare molecular binding, which often includes chemical bonding.
A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.
A chemical element refers to all aspects of the species of atoms that have a certain number of protons in their nuclei, including the pure substance consisting only of that species.
Unlike chemical compounds, chemical elements cannot be broken down into simpler substances by any chemical reaction.